Abstract
This paper presents a consistent set* of thermodynamic properties for oxygen from 100°K to a temperature at which the vapor pressure of the solid is about 10-6 mm Hg. Published experimental data were used to compute the vapor pressure and heats of vaporization and sublimation at 2° intervals over the temperature range 20° to 100°K, and enthalpy and entropy for the saturated condensed phase, the two-phase region, and the superheated region at 2° Intervals over the range 30° to 100°K. These calculated values were used to construct a temperature-entropy diagram having lines of constant enthalpy H, constant pressure P, constant volume V, and constant quality x. A similar thermodynamic diagram has been reported earlier for parahydrogen[2,3].
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